The points O, P, Q and R all lie on the same line segment, in that order, such that the ratio of
O
P
:
P
Q
:
Q
R
OP:PQ:QR is equal to
5
:
6
:
1.
5:6:1. If
O
R
=
36
,
OR=36, find
O
Q
.
OQ.